title: Comparison of verapamil and nifedipine in the treatment of variant angina pectoris: preliminary observations in 10 patients.
mesh_terms: D000787:Angina Pectoris / Q000188:drug therapy*; D000788:Angina Pectoris, Variant / Q000188:drug therapy*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009543:Nifedipine / Q000009:adverse effects / Q000627:therapeutic use*; D005996:Nitroglycerin / Q000627:therapeutic use; D010919:Placebos; D011725:Pyridines / Q000627:therapeutic use*; D014700:Verapamil / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D010919:Placebos; D011725:Pyridines; D014700:Verapamil; D005996:Nitroglycerin; D009543:Nifedipine